Rotary pump



E. CROUSE.

ROTARY PUMP.

APPLICATION FILED SEPT. 22, 1921.

1,436,863.' PanIedNov. 28, 1921 772W @mmm l l zen of the, United States, residing at- 'Y Patented Nov. 2S, 1922. l

mrEfD STATES PATENT oFFlcI-:l

.EMonY onoUsE, or WICHITA, KANSAS.

ROTARY PUMP.

Application mea' september To alli/whom it may concern:

Be it known that I, EMoRY CRoUsn, a citi- Wichita, county of Sedgwick, and State of Kansas, have-,invented certain new andv useful Improvements in Rotary Pumps; and I do declare the followin to be a full, clear,

and exact description o ,the invention, such as will enable othersskilled in the art to 'quantities of liquid. It is also my object together with other vto produce a pump of'large capacity compared to its size and therefore specially adapted to be employed in places where the space is limited.

In order. to' more clearly descnibe my invention L shall refer to the .accompanying drawing in which- Fig. 1 is a side elevation of my pump fully assembled. 1

Fig. 2 is a section on line 2-2 Fig. 3. Fig. 3 is a section on line 3-3 Fig. 1 and Fig. 4 is a longitudinal section taken on line 4-4 Fig. 3. t

The `same reference characters will be used to indicate the same parts throughout the several views. f

i My improved rotary pump comprises an annular body portion 1, a rear side portion or plate2, a. front side portion or plate 3, a rotor 4 and a'plurality of movable plates,

parts which will be hereinafter pointed out. f f v,

Annular body portion 1 has an intake port 7 which `is provided with an extension 8 of considerable length and diametrically opposite port 7 is an exhaust p'ort9 which is also provided with an'extension 10, extensions 8 and 1() being separated by an -arcuate p'ortion 11 which is'adapted to makea water tight sliding fit with the outer surface of rotor 4, in the mannerindicated 'in Fi s.y 2

'and 4. The rear side or .plate 2 is provlded lwith an outwardly projectinghollw'portion 12: which :serves as a bearing for thejrotor 22, 1921. Serial N0. 502,323.

shaft 13 the inner surface of plate 2 having a circular projecting portion 14v which is con-- centric with the inner circular opening -of the body portion l but eccentric with respect to the bearing in projection 12I all as shown inl Fig. 2. The front side plate 3 has an outwardly projecting tubular member 15 and a bearingl for shaft 13, tubularmember 15 serving as a gland or packing boX and containing suitable packing material 17 which iscompressed by the inner -end of bearing 18 which is provided with an .putwardly extending flange 19 and which is heldin position i by a screw threaded cap 20 (Fig. 3). The' rotor 4 is of smaller diameter'than the openmg 1n 'member 1 and is mounted eccentrlcally 'so that its outer surface engages the ,curved partll as'above stated. Each side ofthe rotor 4 has an annular flange 2l which fits snugly. against the inner surface of sides 2 and 3 (Figs. 2- and 3). Rotor 4 is provided with la plurality of spaced slots 22 the lead- A ing sides of which are substantially radial (Fig. 4)'. Slideable in said slots 22 are plates 23 whose outer sides` are held incontact with the inner surface of body member 1 and whose ends are in close 4but sliding contact with the inner surfaces of plates 2 -and 3 (Fig. 3). For the purpose of causing i plates 23 to reciprocate in slots 22 and contact with the inner surface of body member '4 1, I have provided two rings 24 one of which surrounds the circular projection 14 on plate 2 and the other 'lof which surrounds the corresponding circular projection 25 on plate 3 f (Fig. 3)'. The inside 'diameters of rings 24 is slightly greater than the outside diameters of projections v14 and 25 (Fig. 2). Projecitions 14 and -25 are each provided with two holes angularly arranged with respect to each other. Hole 26 is radial and extends in the direction of the greatest eccentricit with respect to shaft 13. The other hole 2 is spaced at an angle of substantially sixty degrees from hole 26.V Within `each hole is a spring 28 anda ball 29. The balls 29 enage Ithe innerJ surface of ring 24 and holds ghe same in an eccentric position with respect `to projections 14 and 25 all as shown in. Fig.' 2. VPlates. 23 engage the outer peripheries of rings 24 and are so related in size to the other I parts that when they occupy positions to the left of the central vertical line'of F'i'gs. 2

' and 4 they will move the rings 24 against vthe tension of springs 28 and in this manner 'their outer Vedges are held in close Contact side plate 2 may be made integral. Pipes 33 and 34 can be connected respectively with the intake and the' exhaust ports 7 and 9.

turning the rotor 4 but it is obvious that I may operate the pump by other power if I so desire.

The operation ofiny pump is as follows Handle 35 is rotated in a clockwise direc-j N, tion and through the medium ot shaft 13 `rotates 'the rotor 4 in the same direction- Rings v24 keep plates 23 in close contact with the innerf walls of body member 1. As each plate 23 passes the intake port 7 it produces a suction which causes the atmospheric pressure to force liquid through pipe 33 into the pump; the liquid is carried along by plates 23 and discharged through port 9 in the manner well known in rotary pumps. I am aware that pumps have been made which embodythe broad lidea of a circular chamber containing an eccentrically\ placed rotor carrying a number of valve plates, but I believe that I am the first one to employ my specific means Jfor keeping the plates in contact with .the inner cylindrical surface and to compensate for wear. Y

lHaving now described my invention what I claim is l 1. In al rotary pump haviiig a cylindrical chamber, a rotor mounted eccentrically therein, a plurality otsubstantially radial slots in said rotor, plates slidably mounted in said slots, means for yieldingly holding said plates against the inner surface of said chamber said means comprising a pair of inwardly extending circular projections con.- centric with respect to said chamber, a ring l surrounding each circular projection and having a greater internal diameter than the diameter of said'projections, resilient means on one side of saidprojections :tor engaging the inner surface. of said rings and means on said plates for engaging the outside olf-said rings.

f 2. A rotary pump comprising-a cylindric-g-l chamber having an intake ,and an exhaust port, an inwardly extendmg circular projection oneach side of ls aid chamber and 'concentrici therewith, a rotor eccentrically .mounted within said chamber and providedwith circular `flanges onl each side for en- In Fig. l I have shown va handle 35 for' Iimmenses l gaging the sides of the chamber, a plurality of substantially radial slots in said rotor, plates slideable in j. said slots, a ring surrounding each circular projection and engaging said plates and resilient means between said projections and said ring. f

3. A rotary pump comprising a cylindrical chamber having an intake and an exhaust port, an inwardl -extendingfcircular vprojection on each si e of said chamber and concentric therewith, a rotor eccentrically mounted within said chamber and provided with circular flanges on each side for engaging the sides of the chamber, a plurality of substantially radial'slots in said rotor, plates slidable in said slots, a ring loosely surrounding each circular projection and engaging an end of said plates and resilient means on one 'side of said projections for engaging the interior of said rings.

4;. A rotary pump comprising a cylindricalI chamber yhaving an intake and an exhaust port, an inwardl extending circular projection on each si e of said chamber and concentric therewith, a rotor eccentrically mounted within said chamber and provided with circular flanges on each side `for engaging the sides of' the chamber, a plurality of substantially radial slots in said rotor, plates slideable in said slots a ring loosely surrounding, each circular projection and engaging an end of said plates, a pluralityl of angularly spaced springs on one side of said projections and engaging with the in- `terior of said rings whereby said rings will hold said plates yieldingly against the inner surface of saidcylindrical chamber.

5. -A rotary pump comprisinf a c lindri cal chamberhaving an intake and an exhaust port, an inwardl extending circular projection oneacli si e of said chamber andconcentnc therewith, a rotoreccentr1- cally'mounted within said chamber and provided with circular langes on each side for engaging the sides ofthe chamber, a-plurality of substantially radial slots in said rotor, platesslideable in said slots, a ring loosely surrounding each circular projection and engaging an end lof said plates, a pluralityl of angularly spaced springs on one side of Q said projections and engaging with the'interior of said rino's whereby said rings will hold said plates yleldingly against the inner surface of said cylindrical chamber, and

balls between the endsof said springs and the interior of said ririgsv K y'In testimony whereof I ,alix my signature.

.EMORY ROUSE. 

